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Chimps may have used stone hammers
"This is the only case of any prehistoric, non-human Great Ape tool use ever discovered."
- Julio Mercader, archaeologist/study co-author
Ivory Coast, Africa - Chimpanzees learned to make and use stone tools on their own, rather than copying humans, new evidence suggests.
It does dispel the notion ... that humans were the only forest-dwellers with any brains.